| Value |
Category |
| 0 |
|
| 1 |
Nivel 1 |
| 2 |
Nivel 2 |
| 3 |
Nivel 3 |
| 4 |
Nivel 4 |
| 5 |
Nivel 5 |
| 6 |
Nivel 6 |
| 7 |
No sabe |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.